(This is a carry on from my previous question about Oxygen pooling)
I am creating a world that is made up of Oxygen - in deep caves/sink holes, and Hydrogen/Helium (possibly Methane) in the higher levels.
I would like my characters to be able to visually see the different gasses as they travel the world, through the use of goggles or a helmet.
I know we can distinguish the atmosphere and makeup of different planets by the colour. But isn't that usually based on the colour of the surface? As in - what the gas has done to the surface is what we are looking at, rather than the gas itself?
Oxygen, Helium and Hydrogen all have different absorption wavelengths in nm. e.g.
Hydrogen 433, 486, 656
Helium 447, 502, 587, 668
Oxygen 464 to 467, 559, 626, 760
Does this mean (theoretically) that you could create a filter (helmet/goggles) that could be tuned to these specific spectrum's so you could "see" the different gasses on planets?